Method for producing hot metal

C - Chemistry – Metallurgy – 21 – B

Patent

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Details

C21B 3/02 (2006.01) C21B 5/00 (2006.01) C21B 13/00 (2006.01) C21B 13/14 (2006.01)

Patent

CA 2318185

According to the inventive method for producing hot metal, feed materials made up of iron ore, preferably in lump and/or pellet form, and optionally, flux materials, preferably lime and/or dolomite are reduced to sponge iron in a reduction area. The resulting sponge iron is then melted down into hot metal in a melt-down gasification area with solid carbon supports and oxygen- containing gases being added and a reduction gas and slag being formed. Said reduction gas is at least partially introduced into the reduction area, reacted there and drawn off as top gas. The invention also relates to an installation for carrying out this method.

L'invention concerne un procédé pour produire de la fonte liquide, selon lequel les matériaux utilisés, formés par du minerai de fer, de préférence sous forme de morceaux ou de boulettes, et éventuellement des fondants, de préférence de la chaux et/ou de la dolomite, sont réduits dans une zone de réduction pour former une éponge de fer. Cette dernière est ensuite élaborée dans une zone de gazéification par fusion, avec apport de substrats de carbone solides et de gaz renfermant de l'oxygène pour donner de la fonte liquide. Un gaz réducteur introduit au moins partiellement dans la zone de réduction est transformé dans cette zone et extrait sous forme de gaz de gueulard, et des scories sont formées. L'invention concerne en outre une installation pour mettre en oeuvre ledit procédé.

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